package com.atguigu.eduservice.controller;
import com.atguigu.commonutils.R;
import com.atguigu.eduservice.entity.EduTeacher;
import com.atguigu.eduservice.entity.vo.TeacherQuery;
import com.atguigu.eduservice.service.EduTeacherService;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import io.swagger.annotations.ApiOperation;
import io.swagger.annotations.ApiParam;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.StringUtils;
import org.springframework.web.bind.annotation.*;

import java.util.HashMap;
import java.util.List;
import java.util.Map;

/**
 * <p>
 * 讲师 前端控制器
 * </p>
 *
 * @author testjava
 * @since 2021-02-18
 */
@RestController
@RequestMapping("/eduservice/teacher")
//@CrossOrigin //用nginx需要加
public class EduTeacherController {
    @Autowired
    private EduTeacherService teacherService;

    //1.查询讲师表所有数据
    @ApiOperation(value="所有讲师列表")
    @GetMapping("/findAll")
    public R findAll(){
        List<EduTeacher> list = teacherService.list(null);
        return R.ok().data("items",list);
    }
    //2.逻辑删除
    @ApiOperation(value="逻辑删除讲师")
    @DeleteMapping("/{id}")
    public R removeTeacher(@ApiParam(name = "id",value = "讲师ID",required = true)
                                     @PathVariable String id){
        boolean flag = teacherService.removeById(id);
        if(flag)return R.ok();
        else return R.error();
    }
    //3.分页查询讲师的方法
    @ApiOperation(value="分页查询讲师")
    @GetMapping("/pageTeacher/{current}/{limit}")
    public R pageListTeacher(@PathVariable Long current,
                             @PathVariable Long limit){
        Page<EduTeacher> pageTeacher=new Page<>(current,limit);//当前页 每页个数
        teacherService.page(pageTeacher,null);//分页

        long total=pageTeacher.getTotal();
        List<EduTeacher> records = pageTeacher.getRecords();//数据list集合
        return R.ok().data("total",total).data("rows",records);
    }
    //4.条件查询带分页
    @ApiOperation(value="条件查询带分页")
    @PostMapping("/pageTeacherCondition/{current}/{limit}")
    public R pageTeacherCondition(@PathVariable Long current, @PathVariable Long limit,
                                  @RequestBody(required = false) TeacherQuery teacherQuery){
        Page<EduTeacher> pageTeacher=new Page<>(current,limit); //当前页 每页个数
        QueryWrapper<EduTeacher> wrapper=new QueryWrapper<>();//条件
        // 多条件组合查询  mybatis学过 动态sql
        String name = teacherQuery.getName();
        Integer level = teacherQuery.getLevel();
        String begin = teacherQuery.getBegin();
        String end = teacherQuery.getEnd();
        //判断条件值是否为空，如果不为空拼接条件
        if(!StringUtils.isEmpty(name)) {
            wrapper.like("name",name);
        }
        if(!StringUtils.isEmpty(level)) {
            wrapper.eq("level",level);
        }
        if(!StringUtils.isEmpty(begin)) {
            wrapper.ge("gmt_create",begin);
        }
        if(!StringUtils.isEmpty(end)) {
            wrapper.le("gmt_create",end);
        }
        //排序
        wrapper.orderByDesc("gmt_create");
        //调用方法实现条件查询分页
        teacherService.page(pageTeacher,wrapper);//分页
        long total=pageTeacher.getTotal();
        List<EduTeacher> records = pageTeacher.getRecords();//数据list集合
        return R.ok().data("total",total).data("rows",records);
    }
    //5.添加讲师的方法
    @ApiOperation(value="添加讲师")
    @PostMapping("/addTeacher")
    public R addTeacher(@RequestBody EduTeacher eduTeacher){
        boolean save = teacherService.save(eduTeacher);
        if(save)return R.ok();
        else return R.error();
    }
    //6.根据id查询讲师
    @ApiOperation(value="根据id查询")
    @GetMapping("/getTeacher/{id}")
    public R getTeacher(@PathVariable String id){
        //int a=10/0;//模拟异常
        EduTeacher eduTeacher = teacherService.getById(id);
        return R.ok().data("teacher",eduTeacher);
    }
    //7.修改讲师
    @ApiOperation(value="修改讲师")
    @PostMapping("/updateTeacher")
    public R updateTeacher(@RequestBody EduTeacher eduTeacher){
        boolean flag = teacherService.updateById(eduTeacher);
        if(flag)    return R.ok();
        else return R.error();
    }
}

